Finding extended homes…
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Sign in to keep them on every device →Finding extended homes…
Homes within 1 km whose energy certificates show the floor area growing: extensions, loft and garage conversions. Tap a home on the map or in the list for its full history. Back to CM15 8PT
Not every extension shows here. We only see building work when a new energy certificate is lodged, which happens when a home is sold, let or newly built. A loft or extension added since then won't appear, even with planning permission and building control sign-off, because those records aren't published as open data outside London. Missing work doesn't mean missing paperwork.
| Home | Before | After | Added | Recorded |
|---|---|---|---|---|
| Ker, Greenway887 m away | 245 m² | 497 m² | +252 m² +103% | 2022 |
| Lofthus, Mallard Way812 m away | 123 m² | 301 m² | +178 m² +145% | 2021 |
| 26, Mount Avenue978 m away | 382 m² | 554 m² | +172 m² +45% | 2023 |
| Russets, Darcy Close894 m away | 122 m² | 282 m² | +160 m² +131% | 2025 |
| 2, Shenfield Gardens556 m away | 112 m² | 272 m² | +160 m² +143% | 2019 |
| Fairoak, Kandlewood811 m away | 212 m² | 338 m² | +126 m² +59% | 2025 |
| 8, Willow Close563 m away | 83 m² | 207 m² | +124 m² +149% | 2025 |
| Greenloaning, 8, Herington Grove625 m away | 159 m² | 276 m² | +117 m² +74% | 2018 |
| 6, Janmead770 m away |
From energy performance certificates (MHCLG): a later certificate shows at least 15 m² and 15% more floor area than an earlier one (and no more than 2.5 times, to leave out typing errors). Some changes come from a more careful measurement rather than building work. Addresses: HM Land Registry. Contains HM Land Registry data © Crown copyright and database right 2026, OGL v3.0.
| 112 m² |
| 228 m² |
| +116 m² +104% |
| 2020 |
| 85, Sebastian Avenue183 m away | 86 m² | 201 m² | +115 m² +134% | 2023 |
|---|
| 10, Friars Avenue741 m away | 132 m² | 245 m² | +113 m² +86% | 2023 |
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| 78, Oliver Road208 m away | 88 m² | 200 m² | +112 m² +127% | 2022 |
|---|
| 60, Rayleigh Road677 m away | 107 m² | 219 m² | +112 m² +105% | 2020 |
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| 21, Cory Drive793 m away | 132 m² | 242 m² | +110 m² +83% | 2025 |
|---|
| 117, Chelmsford Road247 m away | 91 m² | 196 m² | +105 m² +115% | 2019 |
|---|
| 39, Friars Avenue741 m away | 109 m² | 209 m² | +100 m² +92% | 2026 |
|---|
| 11, Poplar Drive851 m away | 127 m² | 225 m² | +98 m² +77% | 2025 |
|---|
| 11, Friars Avenue741 m away | 92 m² | 188 m² | +96 m² +104% | 2024 |
|---|
| 68, Kilworth Avenue0 m away | 87 m² | 182 m² | +95 m² +109% | 2014 |
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| 46, Sebastian Avenue191 m away | 131 m² | 225 m² | +94 m² +72% | 2019 |
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| 22, Friars Avenue741 m away | 89 m² | 183 m² | +94 m² +106% | 2019 |
|---|
| 18, Willow Close563 m away | 81 m² | 174 m² | +93 m² +115% | 2026 |
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| 4, Willow Close563 m away | 71 m² | 161 m² | +90 m² +127% | 2024 |
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| 9, St Marys Avenue142 m away | 72 m² | 161 m² | +89 m² +124% | 2026 |
|---|
| 40, Crossways485 m away | 135 m² | 224 m² | +89 m² +66% | 2019 |
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| 22, Holmwood Avenue210 m away | 117 m² | 205 m² | +88 m² +75% | 2022 |
|---|
| 16, Willow Close563 m away | 75 m² | 160 m² | +85 m² +113% | 2014 |
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| St. Briavels, Greenway682 m away | 231 m² | 315 m² | +84 m² +36% | 2023 |
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| 19, Sebastian Avenue313 m away | 115 m² | 199 m² | +84 m² +73% | 2020 |
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| 8, Woodland Close908 m away | 58 m² | 140 m² | +82 m² +141% | 2019 |
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| 34, Herington Grove850 m away | 101 m² | 175 m² | +74 m² +73% | 2022 |
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| 65, Kilworth Avenue0 m away | 73 m² | 146 m² | +73 m² +100% | 2025 |
|---|
| 15, Willow Close563 m away | 71 m² | 142 m² | +71 m² +100% | 2012 |
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| 16, Hunter Avenue273 m away | 63 m² | 132 m² | +69 m² +110% | 2020 |
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| 16, Oliver Road294 m away | 91 m² | 159 m² | +68 m² +75% | 2025 |
|---|
| 65, Woodland Avenue961 m away | 68 m² | 136 m² | +68 m² +100% | 2022 |
|---|
| 33, Crossways485 m away | 130 m² | 197 m² | +67 m² +52% | 2023 |
|---|
| 11, Janmead770 m away | 164 m² | 229 m² | +65 m² +40% | 2021 |
|---|
| Hillcroft, Alexander Lane407 m away | 105 m² | 170 m² | +65 m² +62% | 2016 |
|---|
| 31, Friars Avenue741 m away | 97 m² | 161 m² | +64 m² +66% | 2015 |
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| 28, Friars Avenue741 m away | 122 m² | 184 m² | +62 m² +51% | 2024 |
|---|
| 21, Sebastian Avenue313 m away | 119 m² | 181 m² | +62 m² +52% | 2021 |
|---|
| 40, Burses Way941 m away | 96 m² | 158 m² | +62 m² +65% | 2015 |
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| 19, Cory Drive793 m away | 126 m² | 186 m² | +60 m² +48% | 2024 |
|---|
| 46, Oliver Road229 m away | 88 m² | 148 m² | +60 m² +68% | 2021 |
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| 93, Sebastian Avenue183 m away | 62 m² | 122 m² | +60 m² +97% | 2018 |
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| 66, Kilworth Avenue0 m away | 91 m² | 150 m² | +59 m² +65% | 2011 |
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| 47, Hutton Road802 m away | 143 m² | 202 m² | +59 m² +41% | 2010 |
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| 14, Crossways439 m away | 133 m² | 191 m² | +58 m² +44% | 2025 |
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| Morada, Mount Avenue699 m away | 228 m² | 286 m² | +58 m² +25% | 2011 |
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| 65, Chelmsford Road388 m away | 81 m² | 138 m² | +57 m² +70% | 2017 |
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| 3, Greyfriars906 m away | 220 m² | 277 m² | +57 m² +26% | 2016 |
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| 59, Friars Avenue970 m away | 107 m² | 161 m² | +54 m² +50% | 2022 |
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| 96, Chelmsford Road326 m away | 175 m² | 227 m² | +52 m² +30% | 2022 |
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| 26, Oliver Road229 m away | 88 m² | 140 m² | +52 m² +59% | 2012 |
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| 80, Chelmsford Road326 m away | 158 m² | 209 m² | +51 m² +32% | 2024 |
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| 48, Hunter Avenue273 m away | 91 m² | 142 m² | +51 m² +56% | 2023 |
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| The Coppice, Greenway887 m away | 308 m² | 359 m² | +51 m² +17% | 2023 |
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| 8, Rayleigh Road434 m away | 79 m² | 130 m² | +51 m² +65% | 2020 |
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| 1a, Friars Avenue741 m away | 89 m² | 140 m² | +51 m² +57% | 2017 |
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| 47, Poplar Drive851 m away | 112 m² | 162 m² | +50 m² +45% | 2024 |
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| 10, Rochford Avenue130 m away | 105 m² | 155 m² | +50 m² +48% | 2020 |
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| 62, Long Ridings Avenue888 m away | 81 m² | 131 m² | +50 m² +62% | 2018 |
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| 129, Hunter Avenue253 m away | 89 m² | 138 m² | +49 m² +55% | 2019 |
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| 4, Janmead770 m away | 110 m² | 158 m² | +48 m² +44% | 2014 |
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| 5, Woodland Avenue806 m away | 97 m² | 144 m² | +47 m² +48% | 2014 |
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| Alverstone, Alexander Lane402 m away | 123 m² | 169 m² | +46 m² +37% | 2026 |
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| 68, Oliver Road190 m away | 94 m² | 139 m² | +45 m² +48% | 2026 |
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| 30, Kilworth Avenue268 m away | 145 m² | 190 m² | +45 m² +31% | 2020 |
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| 7, York Road899 m away | 51 m² | 95 m² | +44 m² +86% | 2024 |
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| 86, Hunter Avenue253 m away | 58 m² | 101 m² | +43 m² +74% | 2024 |
|---|
| Monkhams, Friars Close867 m away | 205 m² | 248 m² | +43 m² +21% | 2024 |
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| 49, Long Ridings Avenue888 m away | 91 m² | 133 m² | +42 m² +46% | 2024 |
|---|
| 34, Crossways439 m away | 121 m² | 163 m² | +42 m² +35% | 2018 |
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| 117, Hunter Avenue253 m away | 88 m² | 130 m² | +42 m² +48% | 2017 |
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| 42, Hall Lane747 m away | 74 m² | 116 m² | +42 m² +57% | 2011 |
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| 23, Woodland Close908 m away | 75 m² | 115 m² | +40 m² +53% | 2022 |
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| Longwood, Alexander Lane407 m away | 98 m² | 138 m² | +40 m² +41% | 2014 |
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| Beechwood, Mount Avenue978 m away | 205 m² | 244 m² | +39 m² +19% | 2026 |
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| 160, Worrin Road975 m away | 141 m² | 180 m² | +39 m² +28% | 2023 |
|---|
| 2, Kilworth Avenue268 m away | 148 m² | 187 m² | +39 m² +26% | 2021 |
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| 35, Woodland Avenue806 m away | 80 m² | 119 m² | +39 m² +49% | 2021 |
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| 17, Margaret Avenue575 m away | 118 m² | 156 m² | +38 m² +32% | 2025 |
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| 44, Hunter Avenue273 m away | 89 m² | 127 m² | +38 m² +43% | 2023 |
|---|
| 42, Friars Avenue970 m away | 123 m² | 161 m² | +38 m² +31% | 2020 |
|---|
| 7, Greyfriars906 m away | 150 m² | 188 m² | +38 m² +25% | 2017 |
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| 18, Walton Gardens832 m away | 84 m² | 122 m² | +38 m² +45% | 2015 |
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| 12, Long Ridings Avenue684 m away | 111 m² | 146 m² | +35 m² +32% | 2023 |
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| 108, Hunter Avenue253 m away | 53 m² | 88 m² | +35 m² +66% | 2020 |
|---|
| 59, Woodland Avenue961 m away | 99 m² | 134 m² | +35 m² +35% | 2016 |
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| 84, Chelmsford Road326 m away | 167 m² | 200 m² | +33 m² +20% | 2026 |
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| 85a, Hutton Road583 m away | 23 m² | 56 m² | +33 m² +143% | 2026 |
|---|
| 10, Herington Grove625 m away | 219 m² | 252 m² | +33 m² +15% | 2024 |
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| 26, Woodland Avenue961 m away | 86 m² | 119 m² | +33 m² +38% | 2013 |
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| Flat 11, Ardleigh Court, Hutton Road750 m away | 55 m² | 87 m² | +32 m² +58% | 2021 |
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| 35, Kilworth Avenue0 m away | 145 m² | 176 m² | +31 m² +21% | 2020 |
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| 64, Chelmsford Road456 m away | 108 m² | 138 m² | +30 m² +28% | 2025 |
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| 6, Waltham Close939 m away | 96 m² | 126 m² | +30 m² +31% | 2023 |
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| Flat 12, Ardleigh Court, Hutton Road750 m away | 55 m² | 85 m² | +30 m² +55% | 2021 |
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| 11, York Close875 m away | 96 m² | 126 m² | +30 m² +31% | 2015 |
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| 45, Long Ridings Avenue888 m away | 87 m² | 116 m² | +29 m² +33% | 2026 |
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| 9, Friars Avenue741 m away | 122 m² | 151 m² | +29 m² +24% | 2020 |
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| 24, Hunter Avenue273 m away | 64 m² | 93 m² | +29 m² +45% | 2011 |
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| 60, Friars Avenue970 m away | 162 m² | 190 m² | +28 m² +17% | 2026 |
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| 30, Woodland Avenue961 m away | 61 m² | 89 m² | +28 m² +46% | 2025 |
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| 131, Hunter Avenue253 m away | 87 m² | 115 m² | +28 m² +32% | 2022 |
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| 79, Oliver Road190 m away | 86 m² | 114 m² | +28 m² +33% | 2011 |
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| 147a, Chelmsford Road457 m away | 37 m² | 64 m² | +27 m² +73% | 2022 |
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| Flat 25, Ardleigh Court, Hutton Road750 m away | 56 m² | 82 m² | +26 m² +46% | 2021 |
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| Flat 26, Ardleigh Court, Hutton Road750 m away | 56 m² | 82 m² | +26 m² +46% | 2021 |
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| 33, Oliver Road229 m away | 86 m² | 112 m² | +26 m² +30% | 2020 |
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| 71, Friars Avenue970 m away | 114 m² | 140 m² | +26 m² +23% | 2019 |
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| 10, Chelmsford Road678 m away | 103 m² | 129 m² | +26 m² +25% | 2015 |
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| 5, Oakland Gardens986 m away | 105 m² | 130 m² | +25 m² +24% | 2025 |
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| 27, St Marys Avenue142 m away | 63 m² | 88 m² | +25 m² +40% | 2024 |
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| 15, Woodland Avenue806 m away | 116 m² | 141 m² | +25 m² +22% | 2024 |
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| 93, Friars Avenue970 m away | 121 m² | 146 m² | +25 m² +21% | 2019 |
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| 2, Broxted Mews995 m away | 145 m² | 169 m² | +24 m² +17% | 2026 |
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| 15, Holmwood Avenue210 m away | 148 m² | 172 m² | +24 m² +16% | 2022 |
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| 63, Sebastian Avenue191 m away | 139 m² | 163 m² | +24 m² +17% | 2018 |
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| 28, Holmwood Avenue210 m away | 122 m² | 146 m² | +24 m² +20% | 2018 |
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| 79, Sebastian Avenue183 m away | 69 m² | 93 m² | +24 m² +35% | 2017 |
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| 50, Chelmsford Road456 m away | 155 m² | 179 m² | +24 m² +15% | 2014 |
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| 32, Crossways439 m away | 96 m² | 120 m² | +24 m² +25% | 2011 |
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| 81, Oliver Road190 m away | 61 m² | 85 m² | +24 m² +39% | 2010 |
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| 40, Hall Lane747 m away | 72 m² | 95 m² | +23 m² +32% | 2022 |
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| 34, Rochford Avenue58 m away | 108 m² | 131 m² | +23 m² +21% | 2021 |
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| Flat 27, Ardleigh Court, Hutton Road750 m away | 56 m² | 79 m² | +23 m² +41% | 2021 |
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| 51, Woodland Avenue961 m away | 64 m² | 87 m² | +23 m² +36% | 2019 |
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| Flat 1, Booths Court, Poplar Drive722 m away | 63 m² | 85 m² | +22 m² +35% | 2026 |
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| 10, Hunter Avenue426 m away | 62 m² | 84 m² | +22 m² +35% | 2021 |
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| 135, Hunter Avenue253 m away | 111 m² | 132 m² | +21 m² +19% | 2025 |
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| Flat 39, Ardleigh Court, Hutton Road750 m away | 56 m² | 77 m² | +21 m² +38% | 2021 |
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| Flat 36, Ardleigh Court, Hutton Road750 m away | 56 m² | 77 m² | +21 m² +38% | 2021 |
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| Flat 38, Ardleigh Court, Hutton Road750 m away | 56 m² | 77 m² | +21 m² +38% | 2021 |
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| 12, Hunter Avenue273 m away | 69 m² | 90 m² | +21 m² +30% | 2020 |
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| Flat 34, Ardleigh Court, Hutton Road750 m away | 56 m² | 76 m² | +20 m² +36% | 2021 |
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| 25, St Marys Avenue142 m away | 71 m² | 90 m² | +19 m² +27% | 2023 |
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| Flat 1, Ardleigh Court, Hutton Road750 m away | 68 m² | 87 m² | +19 m² +28% | 2023 |
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| Flat 7, Ardleigh Court, Hutton Road750 m away | 49 m² | 68 m² | +19 m² +39% | 2021 |
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| Flat 13, Ardleigh Court, Hutton Road750 m away | 49 m² | 68 m² | +19 m² +39% | 2021 |
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| Flat 9, Ardleigh Court, Hutton Road750 m away | 49 m² | 67 m² | +18 m² +37% | 2021 |
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| Flat 15, Ardleigh Court, Hutton Road750 m away | 49 m² | 67 m² | +18 m² +37% | 2021 |
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| 5, Long Ridings Avenue684 m away | 83 m² | 100 m² | +17 m² +20% | 2025 |
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| 51, Friars Avenue970 m away | 89 m² | 106 m² | +17 m² +19% | 2025 |
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| Flat 14, Ardleigh Court, Hutton Road750 m away | 49 m² | 66 m² | +17 m² +35% | 2021 |
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| Flat 8, Ardleigh Court, Hutton Road750 m away | 49 m² | 66 m² | +17 m² +35% | 2021 |
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| Flat 17, Ardleigh Court, Hutton Road750 m away | 49 m² | 66 m² | +17 m² +35% | 2021 |
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| 16, Great Oaks581 m away | 112 m² | 129 m² | +17 m² +15% | 2012 |
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| Flat 2, Ardleigh Lodge, Hutton Road776 m away | 54 m² | 70 m² | +16 m² +30% | 2023 |
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| 27, Rayleigh Road477 m away | 66 m² | 82 m² | +16 m² +24% | 2018 |
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| 47, Rochford Avenue58 m away | 78 m² | 93 m² | +15 m² +19% | 2022 |
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| Flat 5, Ardleigh Court, Hutton Road750 m away | 51 m² | 66 m² | +15 m² +29% | 2021 |
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| Flat 6, Ardleigh Court, Hutton Road750 m away | 51 m² | 66 m² | +15 m² +29% | 2021 |
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| Flat 10, Ardleigh Court, Hutton Road750 m away | 55 m² | 70 m² | +15 m² +27% | 2021 |
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